Thursday, October 18, 2012

Line perpendicular to a plane




this is a window blind. A window blind is a type of window covering. There are many different kinds of window blinds, using different systems and materials. A typical window blind is made with slats of fabric, wood, plastic or metal that adjust by rotating from an open position to a closed position by allowing slats to overlap. There are also window blinds that use a single piece of material instead of slats. The three lines highlighted in pink, gray, and green symbolize lines, and they are the blinds . The window is the plane. The blinds are perpendicular to the window. This picture is from the advertising/ marketing industry for Next Day Blinds®.



I got my picture from Google Images
I got my information about blinds from: http://en.wikipedia.org/wiki/Window_blind

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